In [1]:

```
from __future__ import division
import math
#Initializing the variables
P1 = 57; #Power in SI
M = 1/14.6; #Ratio of mass in SI/British
L = 1/0.3048; #Ratio of length in SI/British
T = 1; #Ratio of time in SI/British
#Calculations
'''
n1 is the horsepower and N1 is the corresponding number of British units (ft*lbf/second),
then N1 = 550*n1.
Similarly, for the SI system, n2 in kW,
N2 = 1000*n2
'''
N = (T**3)/(M*L**2) # N2/N1
n = N*550/1000 #n2/n1
P2 = n*P1 ; #Power in kW
print "Power in kW :",round(P2,1)
print "Conversion Factor :",round(n,3)
```